Governing apparatus



P. S. TICE.

GOVERNING APPARATUS. APPLICATION FILED 0cT.23.1916. RENEwED ocT. 10.1918.

1 ,305, 320. Patented June 3, 1919.

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PERCIVALS. TICE, OF DETROIT, IYIICHIGAN..

GovnnmNe ATPARATUS.

specification of Letters Patent. Patented Juneg, 1919 Application filed October 23, 19.16, Serial No. 127,233. Renewed October 10, 1918. SerialvNo. 257,671'.

To all whom t may concern: j

Be itknown that I, PERCIVAL S. TICE, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Governing Apparatus, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled. in the art to which it pertains to make 'and use the same, reference being had to the accompanyin drawings, which form a part of this speci cation.

My invention relates to governing apparatus for internal combustion1 engines and objects of my improvements are to provide an improved throttle valve, an improved speed regulator and a combination speedregulator and throttle Valve.

I secure these objects in the device illustrated in the accompanying drawings in which:

Figure 1 is a sectional elevation of an ap- -paratus embodying my invention and so much of the intake passage of an internal combustion engine as is necessary to illustrate its connection therewith.

Fi 2 is a detail plan view of the line X- Fig. 1.

Fig. 3 is a sectional elevation of an apparatus embodying. my invention and adjacent parts showing a modified construction from that shown in Fig. l.

'a is the passage leading to an internal combustion engine. b is the passageway in the carbureter forming an extension of the intake passage of the engine. g is the float chamber, and f the delivery nozzle. e -is the entrance passage for atmospheric air. c is a valve seat in the device shown in Fig. 1 located at the junction of the passage Afrom the carbureter and the branching passage to the intake of the engine and in the modification of Fig. 3- shown as located at the entrance e to the air passage of the carbureter.

d is a throttle valve of the ordlnary construction. L is the induction pipe through which liquid hydrocarbon is supplied to thev float chamber g. I

z' is a hollow cylindrical Valve havlng one end formed to engage against the valve seat c and the other end closed by a disk o except for the smallaperture n through said disk. The interior of the valve c" is in constant communication withv the intake to the engine outside of the valve seat c by an aperture m, or otherwise, so as to equallze the lpressure within the valve z' and in the intake passage outside of the valve seat c.

j is a spindle rigidly fixed in a stationary support w and so located that the valve i may reciprocate -thereon in engaging and disengaging from the seat c. lo is a disk limmovably Xed on the spindle j. The valve i has a sliding engagement upon the spindle y' and upon the disk 7c around which it tsv to regulate the area of communication between the passage g and the outer air. Z is a compression spring resting at one end upon the stationary disk 7c and at the other end against the outer end of the valve z' and tending to hold said valve upon its seat.

The valve z' is of greater diameter than the port surrounded by the valve seat c.

The modification of Fig. 3 shows the application of the apparatus embodying my invention to a carbureter of the type described in Letters Patent #1,123,955 granted to me January 5, 1915', in which the throttle valve for the control of the engine is located at the intake passage e of the carbureter. The parts are lettered to correspond i tial vacuum is formed in the intake a and the air is therefore drawn through the 'aperture n from the chamber p lowering the pressure in said chamber. The air withdrawn from the chamber p is however partly replaced byl air drawn from the at-' mospherethrough the passage g so that the pressure in the chamber p will be greater than that in the intake passage and less than lthe pressure of the atmosphere. The pressure in the chamber p will be regulated by thedegree of opening to the passage g. If

^ with a smaller pressure such opening is contracted the difference between the pressure on the opposite sides of the valve disk, 0, that is, in the intake, a, and in the chamber, p, will be smaller and if it is extended,l the difference will be larger. Consequently by turning the regulating device 1' or fr a the opening to the passage g may be regulated to control the pressure in the chamber p. With a large pressure in the chamber p the valve i will be withdrawn further from its seat against the action of the spring Z and therein the valve i will be held nearer to its seat. Thus one may regulate the intake to the engine, as by a throttle, by simply adjusting the area of opening to the passage g and the ordinary throttle valve may be dispensed with as in the modification of Fig. 3.

When the openin to the passage g has been adjusted to the egree required the speed the valve c of the engine will be automatically controlled. If the engine slows down the draft from the chamber p will be diminished and the pressure in said chamber will therefore rise drawing the valve i from its seat and enlarging the intake passage of engine.

draft from the chamber p will be increased and the pressure therein will fall; therefore will move toward itsseat contracting the intake passage.

What I claim is:

1. In a carbureter for internal combus tion engines, in combination with the engine intake passage having a main air inlet, a

valve for controlling said inlet having a i chamber; a piston carried xedly with resaid stem and the main spect to the seat of said valve in the opening and closing movement of the latter, said valve having -a head between which and the piston an air space is inclosed which is enlarged and reduced by the opening and closing movement of the valve; means of atmospheric inlet into said chamber and means for regulating such inlet.

2. In the construction described in claim 1, means for restricted communication of the chamber of the valve with the engine intake passage for aording air leakage through said chamber into the air intake passage regardless of the closing of said main air inlet valve.

3. In the structure defined in claimv 1, a stem rigid with respect to the main inlet valve seat, the piston head being carried by air inlet valve being guided on the stem in its opening and closing movement.

4. In the structure defined in claim1,a stem rigid with respect to the main inlet valve seat, said valve being mounted for guidance on said stem in its openlng and closing movement, the stem having the the engine increases the' chamber, and

means of atmospheric inlet into the valveJ chamber consisting of a passage opening into said chamber between the piston head and the chamber head.

5. In the structure dened in claim 1, a stem rigid with the main inlet valve seat, the piston'head being carried by said stem and the main inlet valve being guided on the stem in its opening and closingmovement, the stem having the means of atmposheric inlet into the valve chamber consisting of a passage opening into said chamber between the piston head and the head of the chainber, and a spring reacting between the valve andthe stem for yieldingly resisting the opening movement of the valve.

6. In the structure dened in claim 1, a stem rigid with the main inlet valve seat, the piston head being carried by said stem within the chamber of the valve, the stem having the means of atmospheric inlet into the valve chamber consisting of a passage whose intake is outside of the valve and the means for regulating such inlet consisting of an adjustable closure for said intake.

7. In the structure deined in claim 1,A the chamber of the valve having a suction leak port for communication with the engine intake passage, whereby air is restrictedly admitted into the engine intake passage regardless of the opening or closing of said main airinlet valve.

8. In the structure defined in claim 1, the main air inlet valve being substantially of cup form having its head or bottom facing outwardly with respect to the air inlet, a stem fixed with respect to the valve seat and. extending inward through the air inlet opening, the piston being carried on saidwstem in the chamber ofthe valve, said stem having the means of atmospheric inlet into said valve chamber consisting of a passage open at its outer end for intake and communicatl ing with the chamber of the valve' between the piston head and the head of the valve means for restricted suction communication of the chamber of the valve with the engine intake passage past the piston head.

9. In the ,construction defined in claiml, the main air inlet valve being a shell, a stem rigid with the valve seat which extends in through the outer head of said shell and aords means of guidance of the valve in its opening and closing movement, the piston head being carried on said stem in the chamber of the valve between the two heads thereof, the stem having the means of atmospheric inlet into the valve chamber consisting of a passage opening at its outer end for air inlet, and opening, at its inner end between the piston head and the inner head of the valve chamber, said inner head having a suction leak portfor communication with the engine intake passage.

10. In the construction defined in claim 1, the main air inlet valve being a shell having its cavity in general of cylindrical form and adapted for relative reciprocation of-the Said valve and piston therein, said cylindrical cavity having atmospheric communication at the outer end, a stem rigid with the valve stern which protrudes into the chamberof the shell through said outer end thereof 'and carries the piston head in said chamber of the valve, said stem having the means of atmospheric inlet into the valve chamber consisting of a passage openingat its outer end for air inlet and at its-inner end beyond the piston head in the chamber of the valve, the

inner head of said valve chamber having a A outer end thereof, and constituting the means for carrying the piston head in said chamber, and a spring on -said stem reacting between the same and the valve to yieldingly resist the opening movement of the valve.

4 In testimony whereof I sign this specical tion.

PERCIVAL S. TICE. 

